HP ProBook 4446s Notebook-PC - Manual (Page 7)

Identifying low battery levels ............................................................................. 40
Resolving a low battery level ............................................................................. 41
Resolving a low battery level when external power is available ....... 41
Resolving a low battery level when no power source is available .... 41
Inserting or removing the battery ....................................................................................... 41
Inserting a battery ............................................................................................. 41
Removing a battery ........................................................................................... 41
Using the optional security screw ...................................................................................... 42
Conserving battery power .................................................................................................. 43
Storing a user-replaceable battery ..................................................................................... 43
Disposing of a user-replaceable battery ............................................................................ 44
Replacing a user-replaceable battery ................................................................................ 44
Using external AC power .................................................................................................................... 44
Testing an AC adapter ....................................................................................................... 45
Switchable graphics/dual graphics (select models only) .................................................................... 45
Using switchable graphics (select models only) ................................................................ 46
Using dual graphics (select models only) .......................................................................... 46
7 External cards and devices .......................................................................................................................... 47
Using Media Card Reader cards (select models only) ....................................................................... 47
Inserting a digital card ........................................................................................................ 47
Removing a digital card ..................................................................................................... 47
Using a USB device ........................................................................................................................... 48
Connecting a USB device .................................................................................................. 49
Removing a USB device .................................................................................................... 49
Using optional external devices .......................................................................................................... 49
Using optional external drives ............................................................................................ 50
8 Drives ............................................................................................................................................................. 51
Handling drives ................................................................................................................................... 51
Using hard drives ............................................................................................................................... 51
Removing or replacing the service door ............................................................................ 52
Removing the service door ............................................................................... 52
Replacing the service door ................................................................................ 52
Replacing or upgrading the hard drive ............................................................................... 53
Removing the hard drive ................................................................................... 53
Installing a hard drive ........................................................................................ 54
Improving hard drive performance ..................................................................................... 55
Using Disk Defragmenter .................................................................................. 55
Using Disk Cleanup ........................................................................................... 56
Using HP 3D DriveGuard (select models only) .................................................................. 56
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